Also, NEVER connect/disconnect IC's on these powerful type amps when they are turned on. They'll take that "static" and amplify the shit out of it (the near instantaneous changes in input signal voltage) and it's bye-bye woofer(s)! My daughter did this to my EPI 1000's a couple of years ago....she plugged in (or unplugged) her iPod from my powered up TFM-42 and it literally SHOT the VC right out thru the speaker cone! Plus broke the spyders loose on a couple other of the 8" drivers.....big no-no! I think I posted pics back then....